minerals rescorces

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vocabulary

gemstone - a colorful mineral that has a glassy luster.
ore - rock that contains a metal or economically useful mineral
smelting - the process by which ore is melted to separate the useful metal from other elements
alloy - a solid mixture of two or more metals

outline

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• The uses of minerals
  • Many materials come from minerals.
• Gemstones
  • A mineral that is hard and has a glassy luster.
• Metals
  • Metal is very useful because it can be stretched in shapes and be broken into useful pieces.
• Other useful minerals
  • There are many other useful minerals other than gems and metals.
    • People may use those useful minerals in food, medicine, and etc.
• Ores
  • Ores are rocks that contain a metal or is useful to humans.
• Prospecting
  • A prospecter is anyone who searches for an ore deposite.
• Mining
  • There are three types of mines.
    • Strip mines
    • Open pit mines
    • Shaft mines